Appliance for providing metallic pins with head-plates.



H. J. BDEL.

APPLIANCE FOR PROVIDING METALLIC PINS WITH HEAD PLATES.

APPLICATION FILED JULY 20, 1911.

1,090,038, Patented Mar. 10, 1914.

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HERMANN JOSEPH EDEL, OF NEHEIlVI-ON-TI-IE-RUHR, GERMANY, ASSIGNOR TO GESELL- SCI-IAFT FI IR MASCHINEN- UNI) METALL-INDUSTRIE MIT BESGHRANKTER I-IAFTUNG, OF NEHEIIM-ON-THE-RUI-IR, GERMANY.

APPLIANCE FOR PROVIDING METALLIC PINS WITH HEAD-PLATES.

roac es.

Specification of Letters Patent.

Application filed July 20. 15111.

ilfatented Mar. 110, 1914:.

Serial No. 639,659.

To all whom it may concern Be it known that I, I'IERM.-\NN Josnrn Bonn, engineer,asul; jecto:t th German I hnperor, residing at Nelleim-onthe-Riiihr, in the Kingdom of Prussia, German Empire, have invented certain new and useful Improvements in Ap niances :tor Providing illetallic lins with I-Icad-Ilates, of which the following is a specification.

The present invention relates to a machine for connecting pins to a head plate for drawing pins, carpet nails or the like, the head oi the pin being pressed into a previously 't'ormed depression in the head plate during the SiIIIUliLLIHQOllS flattening out of this plate, as described in Patent No. 1,03-1l,091, granted to me, July 30, 1912.

The principal advantages are certainty and accuracy as regards the method of working and as regards the connection of the head-plates with the pins.

In the accompanying drawing Figure 1 is a vertical section of a slide or carriage guid' ed on a bed plate and containing the most important tools forming part of the present in vent-ion, Figs. 2 to (i are vertical sections on a larger scale showing the individual tools in ditl'erent positions or stages of operation, Fig. 2 is a vertical section of the tool II, Figs. 3 and t are vertical sections of the tool I in different stages of ope ation, Figs. 5 and 6 are vertical sections of the tool III in different stages of operation, Figs. 7, S and 9 indicate certain auxiliary devices as hereinafter described.

Upon the table (4 moves the part Y) which, in order to simply and reliably obtain an accurate guiding action, is best constructed as a slide and is mounted to move endwise in the direction of the arrow in a bed of suitable length on the table a. This slide 6 carries the tools I, II, III, IV required for the several stages of the work and which are pushed in suitable succession over the point V, where the work is performed, to be there brought into operation.

The tool I consists of a driving pin 0 movable vertically in a boss formed on the slide Z), the said driving pin being held up by a spring (1' and carrying at its lower end a sleeve (Z, which is elastically held in its lowest position in a suitable manner by a spring 0. Into this sleeve is inserted from below by the lower driving pin f the head plate 5 which is provided with a central depression and has been placed upon the drivlug pin j either by an automatic 'l'ceding device or by hand. The toolv II consists merely o'l. a driving pin /1. likewise held up bv a spr ng and serves to term a head or thickened part on the wire by pressure, which head when joined to the head plate, lies in the depression therein. The tool III likewise consists oi a driving pin 6 held up by a spring and the lower surfac of which is hollowed out to correspond to the shape of the head plate. This driving pin serves to rivet the head plate securely to the pin and at the same time to produce the bulged shape ot the head plate. The tool IV consists ot a stop piece in which is prclcrably vertically adjustable by means of a screw-tlnreanl and serves to limit the length ot the readyt'ormed pin to be cut oil". so that alter it has been cut oil", the remaining wire projects above the base-plate snilicicntly for forming a head thereon.

Fig. 1 shows a pin formed ready to be cut oil and which is pushed up to the stop piece 7,: by a suitable :leed motion ol? the wire Z which Serves to form the pin. The operation of cutting oil is performed by a suitable device, for example by the two jaws mwhich are movable toward each other and having their cutting edges of such a shape that they simultaneously form a point on the pin cut off from the wire 7, one o'l these jaws being shown in Fig. 7. During this cutting oll operation a suitable length of wire is left projecting beyond the point V, where the work is performed, sec particularly Fig. 2, without any special feeding of the wire being necessary for the purpose. After the cutting olt has been performed, the tool II is brought over the point V, see Fig. 9, the driving pin 71. of which has a short stroke imparted to it by a plunger n, which moves rapidly up and down under the intluence of an eccentric, (not shown), and thereby forms a head on the end. of the wire. as shown in Fig. 3.

Fig. 3 is a vertical section through the tool I standing above the point V. Herein the sleeve (Z which works up and down on the driving pin (r, holds the head plate provided with a depression securely by the edge and, as shown in I ig. l, places it upon the previously formed head on the wire pin Z, the provisional attachment taking place simultaneously. For this purpose the sleeve may be movable upon the driving pin 0 and is held in its lowest position by the spring c. When the driving pin 0 is brought from its position shown in Fig. 3 down into the position shown in Fig. 5, it carries the sleeve (Z with it under the action of the spring 6, the head plate 9 being suitably placed upon the head of the wire Z and held in the correct position. At the same time the plate 9 receives from the driving pin 0 a suitable pressure or blow, so that its depression or hole becomes somewhat contracted, or the edge of this depression is pressed around the head to a slight extent, whereby a provisional attachment between the head plate and the wire is obtained. During this op eration, however, the head plate 9 is still always held exactly central by the sleeve d. When the driving pin 0' moves upward, the sleeve 0? is caused to follow by a suitable stop, say by a pin or key 0 and leaves the head plate 9, behind on the wire Z. By this provisional attachment the exact central and rectangular position of the plate 9 relatively to the Wire pin Z is secured, so that no tilting of the plate 9 after it has been brought into position and prior to the rivetting operation proper, can take place, as is the case with the known method of manufacture. The driving pin 2' situated over the point V, as shown in Fig. 5, can now strike the head plate 9 uniformly on all sides, to rivet it and can rivet it firmly and uniformly to the pin, while the suitable formation as well as the flattening out of this head plate can be effected at the same time, as is shown in vertical section in Fig. 6.

To provide the head plate 9 exactly in the center with the depression for placing it on the wire pin, the present invention comprises a special device, the important parts of which are shown in section in Fig. 8. In a suitable boring of the table is mounted a sleeve 32, in which a bottom die 9 is movable. The head plate 9 is brought into this boring and held by the sleeve 3; against the die 7* which acts as an abutment for the plate 9, after which the bottom die 9 ascends and a suitable recess is pressed into the plate 9. During this operation the plate 9 cannot move inside the boring, in consequence of the secure manner in which it is held.

The sleeve (Z for placing the head plate 9 upon the wire pin Z and holding it concentrically firmly thereon may, as is shown in Fig. 9 in section, be also furnished with an elastic side-wall (Z For this purpose the wall of the sleeve need only be made suitably thin and be provided with incisions at several points, so that the several ears (Z which are produced in this way may spring slightly inward and consequently hold the plate 9 laid between them elastically by its edge. For the better insertion and removal of the plate g, the opening in the sleeve may widen outwardly, as is particularly shown in Figs. 3, at and 9. The first operation is the formation of the pin head, this being eifected by moving the carriage over the base plate a in the direction of the arrow, until tool II arrives over the point V, after which the plunger n descends. The next operation is the application of the headplate g, and for this purpose the carriage moves farther in the same direction, until tool I arrives over the point V, whereupon the plunger it again descends. For the third operation, the carriage recedes until tool III arrives over the point V, when the plunger 17. descends again, to rivet the plate 9 to the pin. For the fourth operation, the carriage recedes farther, until the abutment piece 72 arrives over the point V, when the pin Z, together with the head plate fixed to the same, is pushed upward by suitable means, until stopped by the abutment piece 70. Finally the wire is cut oft by the two small aws m. The to-and-fro motion of the carriage may be produced in any desired manner.

What I claim is 1. In a machine for providing metallic pins with head-plates, the combination of a device for holding the pin, with a device for simultaneously placing the head-plate on the pin, for holding the head-plate concentrically and for pressing it on the pin for the purpose of attaching it provisionally to the pin, substantially as described.

2. In a machine for providing metallic pins with head-plates, the combination of a device for holding the pin, with a sleeve adapted to place the head-plate on the pin and guide it at the circumference, and a device adapted to press the plate upon the pin while it is being thus held, in order to form a provisional connection, substantially as described.

3. In a machine for providing metallic pins with head-plates, the combination of a device for holding the pin, with a sleeve having elastic side walls, and adapted to place the head-plate on the pin and to guide it at the circumference, and a device adapted to press the plate upon the pin, while being thus held, in order to provisionally attach the plate to the pin, substantially as described.

at. In a machine for providing metallic pins with head-plates, the combination of a device for holding the pin, with a driving pin adapted to press the head-plate upon the pin and a sleeve mounted on the driving pin and capable of sliding thereon, the said sleeve being adapted to place the head plate on the pin and to hold it at the circumferits once, while the driving pin applies the pressure for provisionally attaching the head plate to the pin, substantially as described. In a machine for providing metallic pins with head-plates, the combination of a device for holding the pin with a sleeve adapted to place the head plate on the pin and to guide it at the circumference, the mouth of the said sleeve being wider than the interior, to facilitate the introduction of the head-plate, substantially as described.

(3. In a machine for providing metallic pins with head-plates, the combination of a bed-plate containing an anvil and a guide for the wire serving to form the pin, with a carriage adapted to slide to and fro on the bed-plate and containing a driving pin adapted to form a head on the wire by axial pressure on the same, a driving pin provided with a guide sleeve and adapted to push the head-plate out of the said sleeve and to place it on the wire and provisionally attach it to the same, and a driving pin adapted to rivet the head-plate together .with the wire, substantially as described.

7. In a machine for providing metallic pins with head-plates the combination of a bed plate containing an anvil and a guide for the wire serving to term the pin, with a carriage adapted to slide to and fro on the bed plate and containing a driving pin adapted to form a head on the wire by axial pressure on the same, a driving pin provided with a guide sleeve and adapted to push the head plate out of the said sleeve to place it on the wire and provisionally attach it to the same, and a. driving pin adapted to rivet the headdate together with the wire and a pressure device movable up and down in line with the said guide in the bed plate, so as to apply pressure concentrically to the said driving pins guided in the sliding carriage, substantially as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

llllltlllANN JOSEPH EDEL. [1,. s.]

\Vi tnesses Amman Humane, Amateur 1?. Norma.

Copies 0! this patent may be obtained for five cents each, by addressing the Commissioner of Patents Waahlngton, D. C. 

